An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

An inconspicuous footbridge beloved by San Diego locals.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A meditative space out of a fantasy story.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

A hotel and restaurant serving as the mecca of kitsch.

A strange house built only at night, with rumored mystic inspiration.

Towering basalt columns, a creation of fire and ice.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Olfactory delights in San Francisco's Botanical Gardens.

Rainbow-hued local gem in Venice.

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

America's most famous piece of self-built architecture.

One man's homage to the sun continues to grow like a glass fractal.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A psychedelic labyrinth on the San Francisco bay.